On 5 August, the Italian invasion of British Somaliland commenced. Trios of Blenheims from 8 Squadron attacked a motor convoy west of Hargeisa on three occasions; during the third mission Blenheim L8375 was shot down in flames by a patrolling CR.32 flown by Forcheri. The crew consisting of Pilot Officer Roy Kingsley Felstead (pilot) (RAF no. 41786), 19-year-old Sergeant Aubrey Douglas Wright (RAF no. 747992) and Pilot Officer Tom McKenzie Mitchell DFC (RAF no. 44180) were all killed.

On 10 October 1940, he was commissioned (in Servizio Permanente Effettivo) and received the rank of Sottotenente.

From Aden two Blenheim IVFs of 203 Squadron, flown by Squadron Leader J. M. N. Pike and Flight Lieutenant J. P. D. Gethin, made a low-level strafing attack on Makale airfield, on 4 February.
Tenente Luciano Cacciavillani of the 413a Squadriglia together with two CR.32s from the 410a Squadriglia flown by Sottotenente Alberto Veronese and Sottotenente Forcheri, scrambled at 10:30 under the enemy strafing and attacked the two Blenheims, which were both badly damaged, one losing a propeller and crash-landing at its base. Notwithstanding this, they claimed a CR.42 shot down. Indeed, hit by defensive fire in his engine, Cacciavillani was forced to land. He had fired 120 rounds of 7.7mm and 74 of 12.7mm.

On 23 February 1941, seven Hurricanes of 1 SAAF Squadron flew forward to Tole where they refueled. At noon, Major Lawrence Wilmot (V7733?) led Captain Brian Boyle and Lieutenant Andrew Duncan to strafe Makele airfield while Captain K. W. Driver, Lieutenant Servaas de K. Viljoen, Lieutenant E. A. Jarvis and Lieutenant Leonard le Clues Theron provided top cover to the Vickers Wellesley acting as the navigation leader and which was intended to distract the Italians from the three low-flying Hurricanes as they went in. However, the RAF bomber lost its way soon after take-off, being dutifully followed by the top cover formation. In the target area, Major Wilmot realised that something was wrong when he saw a rising dust cloud to his left. He led his two companions toward this.
Finding Makele, the trio went in to strafe. Major Wilmot set fire to a CR.32, which was on the ground with its pilot Sottotenente Forcheri of the 410a Squadriglia in the cockpit, about to take off. He leapt out under fire and managed to reach a trench.
Without their top cover, the Hurricanes were vulnerable to surprise attack, and at that moment reportedly three CR.32s arrived (the dust had been the sign of their scramble). Two fled but Sottotenente Alberto Veronese made good use of their advantageous position and dived on Major Wilmot’s aircraft, shooting it down. Lieutenant Duncan was on him like a flash and shot him down in flames. Veronese managed to parachute to safety, slightly wounded.
Wilmot had in the meantime carried out a crash-landing after that his Hurricane had been hit in the radiator, and became a POW.
Captain Driver, leading the four top-cover Hurricanes, now saw smoke rising, and dived down to join the strafing, the formation claiming five S.79s and three CR.32s set on fire and three S.79s as damaged.

Forcheri ended the war with 1 victory, this one being claimed while flying Fiat CR.32s.